Changes:
Use octal mode for -M (patch by dfjoerg)
Add -b backlog option (fixes#2422, patch by aschmitz)
Restrict Unix socket file ownership by default to ug=rw
Add example apparmor spawn-fcgi abstraction
Use autoreconf instead of calling tools manually
Add more flags to extra-warning flags
Check return values of setuid, setgid, setgroups, initgroups, write
Check whether compiler supports wanted CFLAGS (fixes#2235)
Fix resource leaks in failure cases (found with coverity)
84abec3a24